def copy(f1, f2):
    infopen = open(f1, 'r', encoding="utf-8")
    outfopen = open(f2, 'w', encoding="utf-8")
    db = infopen.read()
    outfopen.write(db)
    infopen.close()
    outfopen.close()
    print('down')




# 文件不存在怎么办？路径不存在这么办？



